this mod will let me use the locker in 2wd 4hi and 4 lo insted of just 4lo i have a 2003 trd 4x4 it worked on my truck and i am showing you how i did it dont blame me if you screw something up this is the gray wire mod i have seen it on ther sites but i decided to put my truck on the line and try it on my truck sorry for the spelling
start with taking off a couple trim peices 4 screws and a little tug gets them off
now locate the 4wd computer it stands out

there is a plug in the bottom unplug it and locate the gray wire i have heard on some trucks the color is diff
now cut the gray wire about 6in from the connector and attach a peice of wire i used some red wire i had attach it to the part coming from the connector and then tape it up to make sure it doesnt come lose also tape the other end of the wire not being used anymore
now i ran the red wire to a ground screw that was already there
and thats it test it before you put every thing back together

Well I dont know what is going on
I did my gray wire mod just like u did greenbean i have an 01 taco 4 door and when i started driving down the road i realized that it had totally diffrent shift points and it would not go into over drive it was running and shifting like it does in 4H so idk what is going on
I hooked the gray wire back up so i could atleast drive it hopefully someone else has had this problem before and can help me.

In some rare cases, there is a different color wire used in place of the grey wire. The best way to identify the correct wire is to locate prong number 8. This wire is in the bottom middle of the plug, between a green/yellow wire and a white/black wire did you get the rite wire is it driving better since you hooked the wire back up

i have others tell me about this mod and no prob i have no probs with mine you can use the locker at any speed with the prerunner so why not the 4x4
stucks did you hook your wire to the peice coming from the plug and not the one that runs up to the dash was it a good ground did you ever get the light to stay on instedd of just blink

This is probably a crazy thought but the screw I grounded it out on had another wire grounded to it maybe the gray wire what shorting something out or something along theses lines lol ya i know way out there

O shit im going to look really really stupid but i grounded the wrong end of the wire LOL i grounded the end of the wire that goes out to the truck i didnt ground the end of the wire that goes into the computer haha

O shit im going to look really really stupid but i grounded the wrong end of the wire LOL i grounded the end of the wire that goes out to the truck i didnt ground the end of the wire that goes into the computer haha